The NVR3000 series are professional megapixel network video recorders that can support up to 8 hard disk drives and network storage expansion. They provide RAID 1, 5, and 6 protection and include an enterprise video management system with video analytics and alarm capabilities. Key features include supporting multiple client access, network storage expansion, solid data protection, and centralized management. The series includes the NVR3104 and NVR3308 models.